Giải pt x+2/3 + 3(2x-1)- 5x-3/6 = x+5/13 02/11/2021 Bởi Hailey Giải pt x+2/3 + 3(2x-1)- 5x-3/6 = x+5/13
Đáp án: x+2/3 + 3(2x-1)- 5x-3/6 = x+5/13 ⇔2/3+3(2x–1)-5x-3/6=5/13 ⇔2/3+3(2x-1)-5x-3/2.3=5/13 ⇔2/3+3(2x-1)-5x-1/2=5/13 ⇔ $\frac{2.2.(3.2)(3(2x-1))-(3.2)(5x)+3.(-1)}{3.2}$= 5/13 ⇔$\frac{4+6.3(2x-1)-6.5x-3}{3.2}$ =5/13 ⇔$\frac{4+18(2x-1)-30x-3}{3.2}$=5/13 $\frac{18(2x-1)-30x+4-3)}{3.2}$ =5/13 $\frac{18(2x-1)-30x+1}{3.2}$=5/13 $\frac{36x-18-30x+1}{3.2}$ =5/13 $\frac{6x-17}{3.2}$ = 5/13 ⇔13.(6x-17)=6.5 ⇔13(6x-17)=30 ⇔78x-221=30 ⇔(78x-221)+221=30+221 ⇔78x-221+221=251 ⇔78x=251 ⇔x=$\frac{251}{78}$ Bình luận
Đáp án: S={$\frac{217}{45}$} Giải thích các bước giải: x+2/3 + 3(2x-1)- 5x-3/6 = x+5/13 ⇔ $\frac{x+2}{3}$ +6x-3- $\frac{5X-3}{6}$ = $\frac{x+5}{13}$ ⇔$\frac{26.(x+2)}{78}$+$\frac{78.6x}{78}$ – $\frac{78.3}{78}$- $\frac{13.(5x-3)}{6}$ = $\frac{6.(x+5)}{78}$ ⇔26x+52+468-234-65x-39=6x+30 ⇔26x-65x-6x=30-52-468+234+39 ⇔-45x=-217 ⇔x=$\frac{217}{45}$ Vậy S={$\frac{217}{45}$} Chúc bn học tốt! Chỗ nào kh hiểu thì hỏi nhé!^^ Xiin hay nhất+5*+cảm ơn:3 @mind Bình luận
Đáp án:
x+2/3 + 3(2x-1)- 5x-3/6 = x+5/13
⇔2/3+3(2x–1)-5x-3/6=5/13
⇔2/3+3(2x-1)-5x-3/2.3=5/13
⇔2/3+3(2x-1)-5x-1/2=5/13
⇔ $\frac{2.2.(3.2)(3(2x-1))-(3.2)(5x)+3.(-1)}{3.2}$= 5/13
⇔$\frac{4+6.3(2x-1)-6.5x-3}{3.2}$ =5/13
⇔$\frac{4+18(2x-1)-30x-3}{3.2}$=5/13
$\frac{18(2x-1)-30x+4-3)}{3.2}$ =5/13
$\frac{18(2x-1)-30x+1}{3.2}$=5/13
$\frac{36x-18-30x+1}{3.2}$ =5/13
$\frac{6x-17}{3.2}$ = 5/13
⇔13.(6x-17)=6.5
⇔13(6x-17)=30
⇔78x-221=30
⇔(78x-221)+221=30+221
⇔78x-221+221=251
⇔78x=251
⇔x=$\frac{251}{78}$
Đáp án:
S={$\frac{217}{45}$}
Giải thích các bước giải:
x+2/3 + 3(2x-1)- 5x-3/6 = x+5/13
⇔ $\frac{x+2}{3}$ +6x-3- $\frac{5X-3}{6}$ = $\frac{x+5}{13}$
⇔$\frac{26.(x+2)}{78}$+$\frac{78.6x}{78}$ – $\frac{78.3}{78}$- $\frac{13.(5x-3)}{6}$ = $\frac{6.(x+5)}{78}$
⇔26x+52+468-234-65x-39=6x+30
⇔26x-65x-6x=30-52-468+234+39
⇔-45x=-217
⇔x=$\frac{217}{45}$
Vậy S={$\frac{217}{45}$}
Chúc bn học tốt! Chỗ nào kh hiểu thì hỏi nhé!^^
Xiin hay nhất+5*+cảm ơn:3
@mind